Electron-impact induced fragmentation of the isomeric 2- and 4-oxo-6,7,8,9-tetrahydro-pyrido [1,2-a] pyrimidines

Tünde E. Takácsy, József Tamás, István Hermecz, Katalin Kovács

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The mass spectrometric behaviour of the isomeric 2- and 4-oxo-6,7,8,9-tetrahydro-pyrido[1,2-a]pyrimidines have been studied in detail under electron-impact induced ionization. Differences in the main fragmentation routes of the two isomeric compounds have been established by high resolution mass measurements and linked scan spectra (constant B/E) of the deuterium-labelled analogue. Correlation between the different dominating tautomeric forms and the characteristic fragmentation pattern of the isomers is discussed.

Original languageEnglish
Pages (from-to)664-666
Number of pages3
JournalRapid Communications in Mass Spectrometry
Issue number6
Publication statusPublished - Jan 1 1997


ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy
  • Organic Chemistry

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